Matanuska-Susitna Borough

Flood Map Update Project


The latest project updates and Document review can be found on the FEMA Floodplain Resources page.

FEMA Floodplain Resources

The Borough joined the National Flood Insurance Program (NFIP)in 1985 with the adoption of the FIRM maps. Since that time a number of flood events as well as substantial population growth have revealed inadequacy of those maps. Development has expanded into areas where the flood risk was not previously studied, leaving folks in harm’s way without any type of warning. Additionally, some of the existing flood zones are flawed, showing risk uphill from the actual area of risk. In 2013, several community meetings were held throughout the Borough and the feedback was clear: the flood maps needed to be updated. The Borough has 3 main watersheds which feed into the area’s rivers, creeks, and streams. Using LiDAR and boots-on-the ground surveys, along with historical flood data, the new maps will more accurately reflect the Base Flood Elevation (BFE) of a given waterway. Knowing how high the water will get, and building above that height, means resident will be safer during a flood event.


Mat-Su Floodplain Managers

Phone: 907-861-7822
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Project Docs

risk-map-fact-sheet.pdf (pdf 1.56 MB)   |  1014 hits